Breeding Common Bean for Increased Temperatures

1. Beating the Heat:
Breeding Common Bean for
Increased Temperatures
Steve Beebe
Idupulapati Rao
José Polanía
César Cajiao
Miguel Grajales
Santos Barrera
Nestor Chavés
Julián Ramirez
David Arango

2. Common Bean Production and Consumption in ES Africa

3. Bean expenditure by economic strata
Quintile 1 Quintile 2 Quintile 3 Quintile 4 Quintile 5
Rural 408.23 675.71 917.63 1087.3 1237.1
Urban 462.57 788.54 818.07 686 832.87
0
200
400
600
800
1000
1200
1400
Percapitarealbeanexp
Figure 2: Per capita real bean expenditures (UGX) in the past 7 days, per wealth quintile, Rural and Urban
Uganda

4. Estimates of Bean Adaptability
Now and in 2050
Current adaptability The “do-nothing”
scenario
Julian Ramirez

5. What is our strategy?
• Defense?
• …or go on the Offensive?
• “The best defense is a good offence.”

6. Phaseolus spp. originated over a range of ecological niches
SECONDARY Pool
• coccineus
• dumosus
• costaricensis
Disease resistance
Large biomass
Root systems
TERTIARY Pool
• acutifolius
• parvifolius
Drought tolerance
Heat tolerance
Pest res.
Good HI
Common Bean
HUMID-SUB HUMID SUB-HUMID to DRY ARID

7. High
Temperature
Research Sites
Caribia
Motilonia
Turipaná
STATIONS
Armero

8. Interspecific lines– Armero, Tolima, Colombia
SEF 14 SEF 43
SEF 60
Pollen viability:
83.54%

9. Antera SER 16
Antera G 40001
(Phaseolus acutifolius)
Polen G 40001
Viabilidad > 90%
Polen SER 16
Viabilidad entre
20 – 30 %
Heat Stress on Anthers and Pollen Viability

10. Pollen Viability
With and Without Heat Stress

11. SEF 28
SEF 60
Armero – CIAT - 2013
Heat Stress Effects
on Grain Filling

12. New High temperature facility
Nestor Chavés; José Polanía

13. What is our strategy?
• Defense?
• …or go on the Offensive?
• “The best defense is a good offence.”

14. Estimates of Bean Adaptability
with Heat Tolerant Beans with 3oC advantage
Current adaptability The “do-nothing”
scenario
Plus 3 degrees
adaptation

15. 40 years of bean research at CIAT
’75 ’80 ’85 ’90 ’95 ’00
Resistance to biotic constraints
Tolerance to drought
Tolerance to high aluminum and low phosphorus
Research on genetic resources
DNA technology
Nutritional quality
’05 ’10
Improving biological nitrogen fixation
’15
Heat tolerance

16. F1’s of Common bean x Sister spp.
Santos Barrera; Roosevelt Escobar

17. Threats of Excess Rainfall
David Arango